# CSM LearnStrike vs Mariner Prep

The clearest difference is price: CSM LearnStrike at Free against Mariner Prep's $1.99. CSM LearnStrike also leads on iOS requirement (14.0 vs 18.4). On ads, in-app purchases and device support there is nothing between them.

CSM LearnStrike is free to download; Mariner Prep costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | CSM LearnStrike | Mariner Prep |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/mariner-prep/id6753153885/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | — | Paid |
| Size | 301 MB | 11 MB |
| Requires iOS | **14.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [4Growth.com](https://appshunter.io/developer/1728434002) | [Babak Khoshroo](https://appshunter.io/developer/1108435117) |

## What reviewers say

### CSM LearnStrike

[App page](https://appshunter.io/ios/app/csm-learnstrike/id6450264607)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Mariner Prep

[App page](https://appshunter.io/ios/app/mariner-prep/id6753153885)

Master the Rules of the Road with targeted practice questions designed for merchant mariners and Naval Officers. This app offers realistic multiple-choice scenarios, including image-based questions for visual aids like lights and signals, to help you pass the relevant module.

**Highlights:** Targeted practice questions, Realistic multiple-choice scenarios, Image-based questions for signals, Focus on Rules of the Road module, Built for merchant mariners and Naval Officers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CSM LearnStrike free?

CSM LearnStrike is free to download, with no in-app purchases.

### Is Mariner Prep free?

Mariner Prep costs $1.99, with no in-app purchases.

### Do CSM LearnStrike or Mariner Prep have ads?

Neither CSM LearnStrike nor Mariner Prep shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*